[jira] [Assigned] (IOTDB-3887) [ shrink + query ] The distributed plan of the query is sent to the node that is executing the region data migration

["Jialin Qiao (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IOTDB-3887?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jialin Qiao reassigned IOTDB-3887:
----------------------------------

    Assignee: Gaofei Cao

> [ shrink + query ] The distributed plan of the query is sent to the node that is executing the region data migration
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: IOTDB-3887
>                 URL: https://issues.apache.org/jira/browse/IOTDB-3887
>             Project: Apache IoTDB
>          Issue Type: Bug
>          Components: mpp-cluster
>            Reporter: 刘珍
>            Assignee: Gaofei Cao
>            Priority: Major
>         Attachments: image-2022-07-19-15-39-54-354.png, ip3_config.properties, ip4_config.properties, screenshot-1.png, screenshot-2.png, screenshot-3.png
>
>
> 3副本3C7D ，缩容1个datanode，缩容成功，
> 执行查询，分布式计划发送到正在执行region数据迁移的节点上，导致查询结果是过期数据。
> region数据迁移成功前，不应该提供查询服务？
> 复现流程
> 1. 私有云环境，准备测试环境
> 准备环境（8C32G机器）：
> master_0718_967cde6
> ip2/3/4/5/13/14/16  共7个datanode
> ip3/4/5 共3个confignode
> ratis协议，3副本3C3D
> ip2启动3bm分别连3datanode
> schema_region_consensus_protocol_class=org.apache.iotdb.consensus.ratis.RatisConsensus
> data_region_consensus_protocol_class=org.apache.iotdb.consensus.multileader.MultiLeaderConsensus
> data_replication_factor=3
> schema_replication_factor=3
> max_waiting_time_when_insert_blocked=3600000
> query_timeout_threshold=3600000
> MAX_HEAP_SIZE="16G"
> benchmark测试机：
> 172.20.70.15
> bm_0620_7ec96c1
> 2.  启动ConfigNode
> 启动DataNode
> 启动2个benchmark，分别连ip3，ip4，配置文件见附件。
> 全部是写入顺序数据。
> 缩容前的region信息
>   !screenshot-3.png! 
> 3. benchmark运行3小时
> 4. 缩容ip3，成功
> 缩容后的region信息
>  !screenshot-1.png! 
> 5.  连ip5执行查询
> select count(s_1) from root.ip3.g_0.d_38;
> 多执行几次，就有分布式计划发送到region数据迁移新节点ip4
>  !screenshot-2.png! 
> 分布式查询计划（ip5的log  log-all-20220719.34.log）：
>  !image-2022-07-19-15-39-54-354.png! 



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